Merge branch 'master' into schema-alteration

Conflicts:
	django/db/backends/mysql/introspection.py
	django/db/backends/oracle/creation.py
	django/db/backends/postgresql_psycopg2/creation.py
	django/db/models/base.py
	django/db/models/loading.py

1 files changed, 8 insertions, 2 deletions

diff --git a/django/db/backends/postgresql_psycopg2/base.py b/django/db/backends/postgresql_psycopg2/base.py
index bf75459b4a..f283476429 100644
--- a/django/db/backends/postgresql_psycopg2/base.py
+++ b/django/db/backends/postgresql_psycopg2/base.py
@@ -6,7 +6,9 @@ Requires psycopg 2: http://initd.org/projects/psycopg2
 import logging
 import sys
 
-from django.db.backends import *
+from django.conf import settings
+from django.db.backends import (BaseDatabaseFeatures, BaseDatabaseWrapper,
+    BaseDatabaseValidation)
 from django.db.backends.postgresql_psycopg2.operations import DatabaseOperations
 from django.db.backends.postgresql_psycopg2.client import DatabaseClient
 from django.db.backends.postgresql_psycopg2.creation import DatabaseCreation
@@ -34,11 +36,13 @@ psycopg2.extensions.register_adapter(SafeText, psycopg2.extensions.QuotedString)
 
 logger = logging.getLogger('django.db.backends')
 
+
 def utc_tzinfo_factory(offset):
     if offset != 0:
         raise AssertionError("database connection isn't set to UTC")
     return utc
 
+
 class DatabaseFeatures(BaseDatabaseFeatures):
     needs_datetime_string_cast = False
     can_return_id_from_insert = True
@@ -55,6 +59,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     can_rollback_ddl = True
     supports_combined_alters = True
 
+
 class DatabaseWrapper(BaseDatabaseWrapper):
     vendor = 'postgresql'
     operators = {
@@ -135,7 +140,8 @@ class DatabaseWrapper(BaseDatabaseWrapper):
                 # Set the time zone in autocommit mode (see #17062)
                 self.set_autocommit(True)
                 self.connection.cursor().execute(
-                        self.ops.set_time_zone_sql(), [tz])
+                    self.ops.set_time_zone_sql(), [tz]
+                )
         self.connection.set_isolation_level(self.isolation_level)
 
     def create_cursor(self):